Pattern for casting steel wheels



G. WALTHER PATTERN FOR CASTING STEEL WHEELS July 31, 1923,

Filed June 16; 1921 4 Sheets-Sheet 1 R m. m V w I .A7 70 RIVEYS July 31, 1923.

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G. WALTHER PATTERN FOR CASTING.3TEEL' WHEELS Filed June 1921 Patented July 31, 1923.

j marsh gem GEORGE WALTHER, 'or DAY-TON, onto.

.P ATTIER'N FR CASTING STEEL WHEELS.

Application filed June 16, 1921. Serial No. 478,133.

To aZZ who mat may concern:

Be it known that I. GEORGE WALTHER, a

citizen of the United States, residing at Dayton, in the county ofMontgomery and State of Ohio, have invented certain new and useful Improvements in Patterns for Casting Steel Wheels, of which the following is a specification, reference being bad therein to the accompanying drawing- My inventionrelatesto patterns for easting steel wheels an'din-particular to composite patterns and a method ofusing such patterns.

The objectof the invention is to provide 7 an economical mechanism and method of producing cast steel wheels. Itis an object to provide a standard pattern forcasting I cast steel wheels which will always be used for casting of all wheels despite various other modifications in the different makes of wheels to suit different types of vehicles and different types of axles and bearings. By I havinga-standard pattern to which all supplementary parts may be attached the expense of casting different styles of'wheels is very materially reduced and the speed of castingis'enhanced.

It is'my ob ect to provlde supplementary portions tovary the-diameter of the hub between spokes to vary the curvature bewhich parts of varying sizes may be attached. It is a further object to provide a patternwhich will provide for-the casting itsperiphery. I p

R f rringto the drawings: VI I Fig. 1 is aplan view of an assembled' t tern; A} I v Fig. 2 is a plan view of the inside of one of atwheel that has tie bars positioned about of the supplementary inner spokeend po'r tions a Fig. 3 is a plan view of the master spider with the inner spoke endportlons removed;

Fig. 4 is a plan view of the master spider with one of the inner spoke end portions removed and the other in place;

Fig. 5*is a sectionon the line 41-4 of Fig ure 4 Fig. 6 is section on theiline 4f 4 of- I Figure 4; I

7 is an end elevation ofi'the assembled pattern.

Fig. 8 is a section of the wheel showing the method of assembly of the several portions andtheir method of attachment.

Fig. 9 is a portion of theipattern in elevation showing the detachable "hub portions in position. a

Referring tothedrawings in detail,-.1 represents the rim ottheinasterpattern; 2

represents the outer spoke ends of the master pattern that has at its inner, end the shoulder 3. Attached to and integralwith- 2 is the inner end ofthe spoke portion of the master pattern which, in combination .with the hub, is generally termed the spider.

This inner end of the spoke is designated 4.

by the bolts or screws 7 to the spokeportions 4. a

'6 is detachable so thatsuch inner spoke i end portions may be varied in their outside '86 while the hub portion is designated 5. 4' and; 5 are shown; in-dotted lines in Fig. 1. Mounted upon and'encasing land-5 is .an

inner, spoke end portion -.6 that is attached I dimensions to vary the diameter of the spokes at their inner ends and the curvature of the portion joining the inner ends'of the-spokes as will be seen from the dotted lines in 4; "It willbe observed that the ends 8 arealways positioned in the same location so that nomatter what other variations and config'ur'ations they mayhave they will fit the universal spider provided for their support ends 2. i I I In practice it is customary to mount upon 6 a hub portion 9 that has on the base thereof a tapered shoulder 10to fit within a. cut-; awayportion 11 having a tapered shoulder 12 on 6. This hub portion is retained by against the shoulder? oil the outer spoke the bolts 13 which pass through 6 into the hub 5. Cutaway portions i l on the periphery of the pattern enable webs to be cast on the periphery of the wheel rim in the finished wheel.

It will be observed that the entire pattern is divided on the parting line 15 so that it is composed of two major sections in accordance with the usual custom inbuilding a pat tern. In a single complete pattern will, therefore, be a pair of spiders, a pair of inner spoke end portions and apair of hub portions. I

The spider will remain constant in its size while the inner spoke end portions'may be varied in their configuration although al-- ways conforming to the standard outside dimensions necessary to fit the spider. Likewise the hub portions always conform to the standard outside dimensions to fit the inner spoke end porti'onswhile their other dimensions be varied.

Thus it is possible by using these standard portions of the patterns to greatly economize in the cost of making patterns and to expedite the'manufacture of such cast wheels.

Varying combinations of sizes and dimensionsmay be obtained by varying the inner spoke end portions of the pattern and the hub portions while maintaining certain basic dimensions which are standard for all wheels.

While I have shown and described certain features as constituting my invention, it will be understood that parts have been shown for purposes of illustration only, and that I do notdesiretobe limited to such details,

" as obvious modifications will occur to a per- 'son skilled in the art.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, 1s:

' 1. In a pattern, a master portion consisting of a rim and outer spoke end portions, aninner spokeend' and hub portion, means to support a portion of the pattern to form the outside dimensions or the inner spoke ends and the portions uniting said spoke ends, and means to retain said last mentioned portions upon the master portion' 2. In a patter1'1,a master portion'consisting of a rim'and outer spoke endportions,

, u l an inner spoke end and hub portion, means to support a portion oi the pattern to' 'f'orm the outside dimensions of the nnerspoke ends and the portions uniting said spoke ends, means to retain said last mentioned portions upon the masterportion, and hub "portions to determine the diameter and width of the hub mounted on said last mennaeaese end portions, shoulders at the point of junction of said spoke portions, a cap member adapted to be mounted between said shoulders in engagement therewith to enclose said hub portion and inner spoke ends.

t. Ina pattern, a n'iaster'pattern consist-- ing of a rim portion and an outer spoke end portion, an inner spoke end portion with a hub connected to the respective outer spoke end portions, shoulders at the point of junction or said spoke portions, a cap member adapted to be mounted between said shoulders in engagement therewith to enclose said hub portion and inner spoke ends, and supplementary hub portions mounted thereon with means to retain the master pattern and the supplementary portions together as a unit in their standardized locations.

' 5. In a pattern, a. master pattern having a standardized rim, and outerspoke end portions, inner spoke ends of smaller dimensions than the outer'spoke ends and integral therewith, a hub connecting said spoke ends to one another as a master internal supporting portion, cap 'members having their outside "dimensions so laid out that they will fit against the shoulders at the point of junction of theelements of the spokes in the master pattern and enoase the inner spoke ends of the master pattern and the hub thereof, the respective portions of the encasing members being; flush with the outside dimensions of the master outer spoke end portions, and

jmeans to retain theseveral parts in engagement with one another.

6. in a master' pattern, one portioneoa sisting of rim portion, outer spoke end portions and inner spoke end portions, said outer spokeend portions and rim portions being of a configuration of the wheel to be cast while the inner spoke end portionsare joined to one another and are of lesser dia'meterthan theother portion, said portions consisting): of one-half'of a master pat-tern;

second half of the master pattern of similar character adaptedto be united on its fiat surface with the fiat'surface of the other hair or the pattern; cup-shaped hub portion adapted to embrace one side of one portion having its exterior diameter equal to that of the wheel to be cast, a second cupshap'ed portion having its marginal edges adapted to engage the marginal'edges of the first mentioned portion and encasing its half of the master pattern with it; and means to lockthe several portions to one another to torm'th'e compl'ete'master pattern.

13in master pattern, oneportionconsisting ota rim portion, outer spoke end portions'and inner spoke end portions, said outer spoke end portions and rim portions being of a configuration of thewheel to be cast while the inner spoke end portions are joined to one another and are of lesser diameter than the other portion, saidportions consisting of one-half of a master pattern; a second half of a master pattern of similar character adapted to be united on its flat surface With the flat surface of the other half of the pattern; a cup-shaped hub portion adapted to embrace one side of the master pattern having its exterior diameter equal to that of the Wheel to be cast, a second cupshaped portion having its marginal edges adapted to engage the marginal edges of the 10 of said oup portions, and means to lock the 15 several portions to one another.

In t4 stimony whereof I aflix my signature.

GEORGE WALTHER. 

